Hi,
Your measure is reasonable, for this type of error message, we usually try the following methods.
Solution 1: Reset the Windows Store’s cache, yes, you have done.
Solution 2: Change your computer’s DNS addresses. Try set 8.8.8 as your Preferred DNS server and 8.8.4.4 as your Alternate DNS server, reboot computer to test result.
Solution 3: Re-register Windows Store through Windows PowerShell. Run Windows PowerShell as Administrator. Type the following into Windows PowerShell and then press Enter:
Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\AppXManifest.xml”}
In addition, look at this similar case for assistance.
http://answers.microsoft.com/en-us/windows/forum/windows8_1-windows_store/windows-store-this-app-cant-open-theres-a-problem/c3060897-d3d3-4036-8cab-0d413a5efb62?auth=1
Regards
Please
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